| 61. | A terminal multiplexer has six 1200 bps' terminals and 'n' 300 bps terminals connected to it. If the outgoing line is 9600 bps, what is the value of n ? |
| a. | 4 |
| b. | 8 |
| c. | 16 |
| d. | 28 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (b).8
|
| 62. | Which of the following is used in the options field of IPv4 ? |
| a. | Strict source routing |
| b. | Loose source routing |
| c. | time stamp |
| d. | All of the above |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).time stamp
|
| 63. | Which layers of the OSI reference model are host-to-host layers ? |
| a. | Transport, Session, Presentation, Application |
| b. | Network, Transport, Session, Presentation |
| c. | Data-link, Network, Transport, Session |
| d. | Physical, Data-link, Network, Transport |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (a).Transport, Session, Presentation, Application
|
| 64. | A network on the Internet has a subnet mask of 255.255.240.0. What is the maximum number of hosts it can handle ? |
| a. | 1024 |
| b. | 2048 |
| c. | 4096 |
| d. | 8192 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).4096
|
| 65. | Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size ? |
| a. | 4 |
| b. | 8 |
| c. | 15 |
| d. | 16 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).15
|
| 66. | A Multiplexer combines four 100-Kbps channels using a time slot of 2 bits. What is the bit rate ? |
| a. | 100 Kbps |
| b. | 200 Kbps |
| c. | 400 Kbps |
| d. | 1000 Kbps |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).400 Kbps
|
| 67. | In a fully connected mesh network with 10 computers, total ______ number of cables are required and ____ number of ports are required for each device. |
| a. | 40,9 |
| b. | 45,10 |
| c. | 45,9 |
| d. | 50,10 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).45,9
|
| 68. | In TCP/IP reference model, the job of ____ layer is to permit hosts to inject packets into any network and travel them independently to the destination. |
| a. | Physical |
| b. | Host to network |
| c. | Application |
| d. | None of the above |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (d).None of the above
|
| 69. | If there are N people in the world and are using secret key encryption/decryption for privacy purpose, then number of secret keys required will be: |
| a. | N |
| b. | N-1 |
| c. | N*(N-1)/2 |
| d. | N*(N+1)/2 |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).N*(N-1)/2
|
| 70. | Optical fiber uses reflection to guide light through a channel, in which angle of incedence is _______ the critical angle. |
| a. | equal to |
| b. | less than |
| c. | greater than |
| d. | less than or equal to |
| View Answer Report Discuss Too Difficult! Search Google |
|
Answer: (c).greater than
|
